Electronic catalog
Genre:Естественные науки (natural_sciences)
catalogue:Articles
Search result:
2871-2880 of 3163
periodical press (Magazines)
BURKEYEVА G. K.
Burkeyevа, G. K. "Cold Curing" of Polyethylene Glycol Maleate with Acrylic Acid and Some Physicochemical Properties of Their Solutions [Text] / G. K. Burkeyevа, Ye. M. Tazhbayev , D. M. Muslimova [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 23-32. - Bibliogr.: p. 30-31 ISSN 2518-718Х.
UDC:
541.64
Subject headings
- Chemistry of macromolecules. Products of polymerization, polycondensation and polyaddition reactions
Annotation
The possibility of using the copolymers based on unsaturated polyesters with acrylic acid (AA) as the main component (polymeric basis) for the creation of novel highly effective sealants and glues of domestic production was demonstrated
Keywords
sealant, glue, unsaturated polyester, polyethylene glycol maleate, unsaturated carboxylic acid, radical copolymerization, acrylic acid, radical copolymerization, cold curing
Kazakhstan
0/0 Free
periodical press (Magazines)
NURMAGANBETOV ZH. S.
Nurmaganbetov, Zh. S. Synthesis and Structure of 4-Substituted (1S,9aR)-1-[(1,2,3-triazol-1-yl)methyl]octahydro-1H-quinolysines of Lupinine [Text] / Zh. S. Nurmaganbetov, S. D. Fazylov , K. M. Turdybekov [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 12-22. - Bibliogr.: p. 20-21 ISSN 2518-718Х.
UDC:
547.94
Subject headings
- Natural alkaloids
Annotation
The article presents results on the synthesis and investigation of the structural features of a number of 1,4-disubstituted 1H-1,2,3-triazole derivatives of the alkaloid lupinine
Keywords
quinolysine alkaloids, lupinine, azides, triazoles, methanesulfonyl chloride, terminal alkynes, 1,3- dipolar cycloaddition reaction, X-ray structural analysis
Kazakhstan
0/0 Free
periodical press (Magazines)
МЫРЗАҚҰЛОВА Б. М.
Мырзақұлова, Б. М. Есіл өзені алабындағы су объектілерінің гидрохимиялық және гидробиологиялық көрсеткіштері бойынша қазіргі кездегі суының сапасы [Мәтін] / Б. М. Мырзақұлова, К. К. Дускаев // Гидрометеорология және экология. - 2019. - № 4 (95). - 61-69 б. - Библиогр.: 68 б. ISSN 2079-6161.
UDC:
504:556
Subject headings
- Су ресурстары экологиясы
Annotation
Есіл өзені суының сапасы мен құрамының қалыптасу ерекшеліктері және өзеннің су сапасына химиялық заттардың әсері қарастырылған
Keywords
гидробиологиялық көрсеткіштер, фитопланктон, перифитон, зоопланктон, бентос, биотикалық индекс, судың ластану индексі, загрязнение воды, water pollution
Kazakhstan
0/0 Free
periodical press (Magazines)
MEDVEDEVA N. A.
Medvedeva, N. A. The Effect of Aging on the Microstructure of Alloys (ТiСr1.8)100–xVx after Electrolytic Hydrogen Charging [Text] / N. A. Medvedeva, A. A. Mironova , N. E. Skryabina [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 95-102. - Bibliogr.: p. 99 ISSN 2518-718Х.
UDC:
544.2
Subject headings
- Physical chemistry of solids, liquids and gases
Annotation
The microstructure transformation of ternary Ti-Cr-V alloys after introduction of hydrogen has been analyzed for a long time. Assessment of the impact of vanadium concentration and ratio of Ti and V concentrations on composition stability has been carried out
Keywords
alloys, electrochemical hydrogen saturation, hydrogen, self-diffusion, microstructure of alloys
Kazakhstan
0/0 Free
periodical press (Magazines)
MULDAKHMETOV Z. M.
Muldakhmetov, Z. M. Obtaining Carbon Sorbent from “Euromet” LLP Coke Breeze [Text] / Z. M. Muldakhmetov, A. T. Ordabaeva , M. G. Meiramov [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 115-124. - Bibliogr.: p. 122-123 ISSN 2518-718Х.
UDC:
661.183
Subject headings
- Adsorbents
Annotation
The paper presents the results of a physicochemical analysis of a coke sample from “Euromet” LLP (Karaganda, Kazakhstan), which is carbonaceous material with high carbon content, the absence of volatiles matter and low ash content
Keywords
coke breeze, coals, sorbent, sorption capacity, ash content, bulk density
Kazakhstan
0/0 Free
periodical press (Magazines)
NURDILLAYEVA R. N.
Nurdillayeva, R. N. Electrochemical Method of Lead (II) Ions Removal from Wastewater Using Granular Graphite Electrodes [Text] / R. N. Nurdillayeva, A. N. Zhylysbayeva , A. K. Askarov [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 61-68. - Bibliogr.: p. 66 ISSN 2518-718Х.
UDC:
544.4
Subject headings
- Chemical kinetics. Catalysis
Annotation
The article presents an electrochemical method of wastewater treatment from Pb (II) ions through granular graphite electrodes
Keywords
lead ions, granular graphite electrodes, wastewater, heavy metals, flow mode, current density
Kazakhstan
0/0 Free
periodical press (Magazines)
TURDYBEKOV K. M.
Turdybekov, K. M. Isolation and Structure of the New Sesquiterpene Lactone 3-oxo-10β-hydroxy-5,7α(H),4,6β(H)-guai-1,11(13)-diene-6,12-olide [Text] / K. M. Turdybekov, S. A. Ivasenko , D. M. Turdybekov [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 52-58. - Bibliogr.: p. 57-58 ISSN 2518-718Х.
UDC:
547.314
Subject headings
- Hydrocarbons of the C/nH////2n-2 series with one triple bond
Annotation
The article presents the results of a chemical study of Tanacetopsis pjataevae, which is an endemic plant in Kazakhstan
Keywords
NMR spectroscopy, IR spectroscopy, mass spectrometry, X-ray analysis, sesquiterpene lactones, Tanacetopsis pjataevae
Kazakhstan
0/0 Free
periodical press (Magazines)
KURMANOVA A. F.
Kurmanova, A. F. DFT Study of Complexation Reactions Involving Dicarboxylic Acids: Hydrogen Bonds, Influence of Solvent Nature [Text] / A. F. Kurmanova, F. Zh. Abilkanova , A. S. Rakhimzhanova [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 43-51. - Bibliogr.: p. 49-50 ISSN 2518-718Х.
UDC:
541.515
Subject headings
- Free radicals
Annotation
Quantum chemical studies of the protolytic ability of some dicarboxylic acids are carried out. The geometric and kinetic parameters of the dimeric molecules of maleic, succinic, tartaric, oxalic, and adipic acids are investigated
Keywords
quantum chemical calculations, density functional theory, hydrogen bond, intermolecular hydrogen bonds, dimerization energy, complexation energy, effect of the nature of the solvent
Kazakhstan
0/0 Free
periodical press (Magazines)
CHITLANGE S. S.
Chitlange, S. S. Development and Validation of HPTLC Method for Simultaneous Estimation of Berberine, Gallic Acid and Ursolic Acid in a Polyherbal Blend [Text] / S. S. Chitlange, S. R. Chandani , S. P. Gandhi [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 33-42. - Bibliogr.: p. 39-41 ISSN 2518-718Х.
UDC:
54
Subject headings
- Chemistry
Keywords
polyherbal, gallic acid, berberine, ursolic acid, method development, validation
Kazakhstan
0/0 Free
periodical press (Magazines)
RYABYKH A. V.
Ryabykh, A. V. The Role of Zinc Ion in the Active Site of Copper-Zinc Superoxide Dismutase [Text] / A. V. Ryabykh, O. A. Maslova , S. A. Beznosyuk [et al.] // Bulletin of the Karaganda University. Chemistry Series. - 2022. - № 2. - Р. 77-87. - Bibliogr.: p. 85 ISSN 2518-718Х.
UDC:
544.18
Subject headings
- Quantum chemistry
Annotation
The interaction of the superoxide radical ion O2– with the active center of Cu, Zn superoxide dismutase was studied obtained by computer simulation
Keywords
Zn-superoxide dismutase, superoxide radical ion, reactive oxygen species, antioxidants
Kazakhstan
0/0 Free
BURKEYEVА G. K.
"COLD CURING" OF POLYETHYLENE GLYCOL MALEATE WITH ACRYLIC ACID AND SOME PHYSICOCHEMICAL PROPERTIES OF THEIR SOLUTIONS
periodical press (Magazines)
0/0 Free
NURMAGANBETOV ZH. S.
SYNTHESIS AND STRUCTURE OF 4-SUBSTITUTED (1S,9AR)-1-[(1,2,3-TRIAZOL-1-YL)METHYL]OCTAHYDRO-1H-QUINOLYSINES OF LUPININE
periodical press (Magazines)
0/0 Free
МЫРЗАҚҰЛОВА Б. М.
ЕСІЛ ӨЗЕНІ АЛАБЫНДАҒЫ СУ ОБЪЕКТІЛЕРІНІҢ ГИДРОХИМИЯЛЫҚ ЖӘНЕ ГИДРОБИОЛОГИЯЛЫҚ КӨРСЕТКІШТЕРІ БОЙЫНША ҚАЗІРГІ КЕЗДЕГІ СУЫНЫҢ САПАСЫ
periodical press (Magazines)
0/0 Free
MEDVEDEVA N. A.
THE EFFECT OF AGING ON THE MICROSTRUCTURE OF ALLOYS (ТIСR1.8)100–XVX AFTER ELECTROLYTIC HYDROGEN CHARGING
periodical press (Magazines)
0/0 Free
periodical press (Magazines)
0/0 Free
NURDILLAYEVA R. N.
ELECTROCHEMICAL METHOD OF LEAD (II) IONS REMOVAL FROM WASTEWATER USING GRANULAR GRAPHITE ELECTRODES
periodical press (Magazines)
0/0 Free
TURDYBEKOV K. M.
ISOLATION AND STRUCTURE OF THE NEW SESQUITERPENE LACTONE 3-OXO-10Β-HYDROXY-5,7Α(H),4,6Β(H)-GUAI-1,11(13)-DIENE-6,12-OLIDE
periodical press (Magazines)
0/0 Free
KURMANOVA A. F.
DFT STUDY OF COMPLEXATION REACTIONS INVOLVING DICARBOXYLIC ACIDS: HYDROGEN BONDS, INFLUENCE OF SOLVENT NATURE
periodical press (Magazines)
0/0 Free
CHITLANGE S. S.
DEVELOPMENT AND VALIDATION OF HPTLC METHOD FOR SIMULTANEOUS ESTIMATION OF BERBERINE, GALLIC ACID AND URSOLIC ACID IN A POLYHERBAL BLEND
periodical press (Magazines)
0/0 Free
RYABYKH A. V.
THE ROLE OF ZINC ION IN THE ACTIVE SITE OF COPPER-ZINC SUPEROXIDE DISMUTASE
periodical press (Magazines)
0/0 Free